The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2025
Filed:
Oct. 19, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Yun-Han Lee, Redmond, WA (US);
Matthieu Charles Raoul Leibovici, Seattle, WA (US);
Chulwoo Oh, Sammamish, WA (US);
Hyunmin Song, Redmond, WA (US);
Junren Wang, Kirkland, WA (US);
META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US);
Abstract
Various embodiments set forth eye tracking systems. In some embodiments, an eye tracking system includes a polarization volume hologram (PVH) combiner having a rolling k-vector design that provides relatively wide coverage of users whose eyeglasses prescriptions can vary. The PVH combiner can further include (1) fiducial regions created by differential patterning that generate dark regions in images captured of an eye, and/or (2) multiple regions that diffract light at angles to produce different perspectives in the captured images. The dark regions and/or different perspectives can be used to calibrate eye tracking. In addition, the PVH combiner can include off-axis lens regions that generate glints for the eye tracking.